Andrey S.

Full Stack Developer React Node | SaaS developer | Node.js developer

I'm a Full Stack Developer React Node, SaaS Developer, and Node.js Developer with 15 years of experience, covering Full-Stack development, SaaS development, Mobile App Development, and AI Automation. A few facts about me: 🏆 100% Job Success score 🏆 125+ projects delivered from MVP to enterprise projects 🏆 10,000+ active users across delivered projects 🏆 Senior Full stack developer with expertise in react and node js What I can develop: ✔️ B2B, B2C, AI-powered, Multi-tenant SaaS platforms as a SaaS developer with experience in 50+ SaaS Platform development ✔️ AI Automation, AI workflows, AI Chatbot and AI Agent Development that reduces manual operations by up to 70% ✔️ Prototype and proof of concept development saving 40% of budget as a Full Stack node.js react developer ✔️ Custom CRM and ERP systems, Internal tools and other management solution cutting admin costs by 40% as a Full Stack Developer React Node ✔️ Booking systems and booking platforms that boosting daily bookings by 30% ✔️ Marketplaces, E-commerce and fintech platforms that boosting sales conversions by 25% ✔️ Admin panel, admin dashboard, and analytics dashboard with charts that cutting reporting time by 60% ✔️ Custom scalable Web Application, website and other Web Development projects driving 40% more organic traffic as a Full Stack Web Developer ✔️ Mobile applications from design to iOS and Android App Development, covered by React Native developer and Mobile App developer ✔️ Code audit, Software Architecture & Design, production delivery, debugging, and production bug fixing, reducing errors by 40%. ✔️ role-based access, payment flows, billing and subscription logic, cutting failed payments by 30% ✔️ User Authentication, user management systems, system administrator, and business operations workflows for 10,000+ users Why clients choose me as a Technical partner: ✔️ SaaS MVP development in 4–6 weeks ✔️ AI-first approach using Cursor, Claude Code, Codex, and Lovable for up to 30% faster development as a Full Stack Developer React Node ✔️ AI Development and AI App Development experience across 35+ AI-powered projects ✔️ Improving page load speed by 55% as a Front End developer React ✔️ Increased database/API response speed by 5x as a Node.js backend developer and Node.js Developer ✔️ Built 120+ API endpoints, microservices, and serverless functions as a MERN Stack developer and javascript developer ✔️ Managed 500K+ records with Database Architecture, Database Design, Prisma, and RLS ✔️ Supported 99.9% uptime with cloud deployment and production deployment ✔️ Reduced deployment failures by 30–40% through CI/CD and release automation ✔️ Improved user experience, engagement, and visibility through dashboards used by 10K+ users As a Senior Full Stack Developer React Node and SaaS Developer, I have 15+ years of experience with: ⚙️ JavaScript, TypeScript, Python ⚙️ React, Next.js, App Router, Vite, Vue.js, Angular, Redux, jQuery, HTML, HTML5, CSS, CSS 3, Canvas ⚙️ Node.js, NestJS, ExpressJS ⚙️ Tailwind CSS, Material UI, Bootstrap, Shadcn/ui ⚙️ SQL, PostgreSQL, MySQL, MongoDB, Supabase, Firebase, Firestore, Redis, Prisma, RLS, Auth ⚙️ Amazon Web Services, AWS S3, AWS Lambda, Google Cloud Platform, Microsoft Azure, Vercel, Railway, DigitalOcean, Cloudflare, Docker, Kubernetes ⚙️ Testing (Jest, Playwright), Monitoring (Sentry), Logging ⚙️ Git (GitHub, GitLab, Bitbucket) ⚙️ LLM, LangChain, RAG, Artificial Intelligence ⚙️ Zapier, n8n, Make, GoHighLevel, GHL ⚙️ HIPAA, GDPR, SOC 2 ⚙️ Figma, Adobe XD, Sketch As a Senior Full Stack Developer React Node and Node.js Developer I have deep experience in API integration: RESTful API, third-party REST API, webhooks, OpenAI API, Stripe API, Twilio API, Anthropic Claude API, ElevenLabs API, ChatGPT API, GraphQL API, WhatsApp business API, Google OAuth, and various Google APIs. As Full Stack Developer React Node and SaaS developer I experience in projects for: Hospitality, Travel, Healthcare, Fitness, Ecommerce, FinTech, Logistics, Finance, Education, E-learning, Retail, HR, Business Services, Media & Entertainment, AI, SaaS marketing, Real Estate platform, etc. 💪 As CTO of Malevich Studio, I can provide: ✔️ UX & UI / Web Design: UI UX Designer support with Figma, Responsive Design, Adaptive Web Design, Software Design, Graphic Design and Adobe Photoshop for 25–40% conversion improvement ✔️ Shopify, PHP or WordPress developer and cms developer for mobile friendly website support ✔️ Python developer and Full Stack developer Laravel Vue Other skills: Application Improvement, Software Development, Software Debugging, Software Consultation, Agile Software Development, Desktop Application, Software Testing, Standalone Application, CodeIgniter, Apache Hive, Jakarta Server Faces, Hybris, Cloud Computing, Java, Ruby on rails, Back-End Development Framework, Front-End Development Framework 🚀 Click “Invite” if you need a Full Stack Developer React Node, Full Stack AI SaaS Developer, or Node.js Developer.